import type { ParsedModule } from '../parsers/types';
/**
 * Interface for cache entry metadata
 */
export interface CacheEntry {
    hash: string;
    timestamp: number;
    module: ParsedModule;
    version?: string;
}
/**
 * Interface for cache statistics
 */
export interface CacheStats {
    hits: number;
    misses: number;
    invalidations: number;
}
/**
 * ModuleCache provides caching for parsed AST modules with file change detection
 * Invalidates cache entries when source files are modified
 */
export declare class ModuleCache {
    private cache;
    private fileHashes;
    private stats;
    private cacheDir;
    private enabled;
    private readonly CURRENT_VERSION;
    constructor(cacheDir?: string);
    /**
     * Get a cached module if it exists and is still valid
     * @param filePath - Absolute path to the file
     * @returns Cached ParsedModule or null if not found or invalid
     */
    get(filePath: string): Promise<ParsedModule | null>;
    /**
     * Store a parsed module in cache
     * @param filePath - Absolute path to the file
     * @param module - Parsed module to cache
     */
    set(filePath: string, module: ParsedModule): Promise<void>;
    /**
     * Clear all cache entries (both in-memory and persistent)
     */
    clear(): Promise<void>;
    /**
     * Get cache statistics
     */
    getStats(): CacheStats;
    /**
     * Reset statistics
     */
    resetStats(): void;
    /**
     * Compute hash of file contents
     * @param filePath - Path to the file
     * @returns SHA256 hash of file contents
     */
    private getFileHash;
    /**
     * Save cache entry to disk
     * @param filePath - Path to the source file
     * @param entry - Cache entry to save
     */
    private saveToDisk;
    /**
     * Load cache entry from disk
     * @param filePath - Path to the source file
     * @returns Cache entry or null if not found
     */
    private loadFromDisk;
    /**
     * Remove cache entry from disk
     * @param filePath - Path to the source file
     */
    private removeFromDisk;
    /**
     * Generate a safe cache key from file path
     * @param filePath - Path to the source file
     * @returns Safe cache key
     */
    private getCacheKey;
}
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